92vanguard wrote:

Is there any way to tell without tearing it all down if I have the wider drums and pads on my '69? It has drums on all 4 corners. V8 5-lug hubs. I know they should be 10" but how do I know what width without pulling it all off?

Any way to tell which it should be based on the data plate?

if stock,  data sourced Mustang Monthly360     auto parts stores have similar data  
Model YearShoe PositionFront Width x LengthRear Width & Length

1965-66 Six-CylinderPrimary Shoe Secondary Shoe2.25 x 7.75-inches 2.25 x 10.0-inches1.50 x 7.75-inches 1.50 x 10.0-inches

1965-66 260/289Primary Shoe Secondary Shoe2.25 x 8.35-inches 2.25 x 10.75-inches1.75 x 8.35-inches 1.75 x 10.75-inches

1967-70 SixPrimary Shoe Secondary Shoe2.25 x 7.62-inches 2.25 x 9.77-inches1.50 x 7.62-inches 1.50 x 9.77-inches

1967-70 Small V-8Primary Shoe Secondary Shoe2.25 x 8.43-inches 2.25 x 10.82-inches1.75 x 8.43-inches 1.75 x 10.82-inches


1967-68 Big-BlockPrimary Shoe Secondary Shoe2.50 x 8.43-inches 2.50 x 10.82-inches1.75 x 8.43-inches 1.75 x 10.82-inches

1969-70 Big-BlockPrimary Shoe Secondary Shoe2.50 x 8.43-inches 2.50 x 10.82-inches2.00 x 8.43-inches 2.00 x 10.82-inches

1971-73 Six & 302Primary Shoe Secondary Shoe2.50 x 8.43-inches 2.50 x 10.82-inches2.00 x 8.43-inches 2.00 x 10.82-inches

1971-73 351/429Primary Shoe SecondaryDisc Brake2.00 x 8.43-inches 2.00 x 10.82-inches
 

Last edited by Don (8/25/2019 7:10 AM)

X2 on what MS said.  One rear swap in the past is all it takes to make any information about how the car left the factory useless.  Plus, I've seen factory info be wrong about a dozen times.  Based on build date my '06 F250 should use 20mm head dowels, so I bought 20mm gaskets before pulling the heads.  It has 18mm dowels.  I bought the truck new, so it never had an engine swap.  That was the last straw, now I verify everything.